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Cometic Gasket Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.100in Bore - 1/2in Studs
Cometic Gasket Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.100in Bore - 1/2in Studs
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Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.100in Bore - 1/2in Studs

CGSC15749-063
191070590680
Head Gaskets
Out of stock
$ 313.95 $ 282.56

SKU: C15749-063 | UPC: 191070590680

Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.100in Bore - 1/2in Studs 1997-2017 Chevrolet GM LS-Series

Cometic C15749-063 cylinder head gasket fits GM LS Gen III/IV small block V8 engines with 4.100 inch bore and 1/2 inch studs. This .063 inch thick Multi-Layer Steel gasket seals high cylinder pressures in boosted or high-compression setups for Chevrolet Corvette Camaro Silverado and other LS-powered vehicles. Proven design handles extreme performance demands in racing and street applications.

Key Features

  • Multi-Layer Steel Construction: Three layers of 301 stainless steel with continuous bead seal extreme combustion pressures up to 250 psi while resisting blowout
  • .063in Thickness: Maintains precise quench and compression ratios in stroker or decked head builds compressed to .051in for optimal power
  • 4.100in Bore: Accommodates sleeved blocks and big-bore pistons common in LS performance modifications without overhang or distortion
  • 1/2in Stud Compatible: Matches ARP or factory-style 1/2-13 head studs for secure clamping on cathedral or rectangle port LS heads
  • Tumble Polished Surfaces: Ensures flatness within .001in for leak-free installation on aluminum or iron decks

Product Notes

  • Designed exclusively for 4.100in bore LS engines verify block and head dimensions before purchase
  • Store in original packaging away from moisture to preserve sealing beads
  • Packaged flat in protective box prevents bending during transit

Installation Notes

  • Professional installation recommended.
  • Deck surfaces must be machined flat within .002in across entire surface
  • Requires 1/2in head studs torque to 65-75 ft-lbs in 3-step sequence using moly lubricant

This Part Fits

Year Make Model Submodel
1997-2004 Chevrolet Corvette Base LS1
1998-2002 Chevrolet Camaro Z28 SS LS1
1999-2007 Chevrolet Silverado 1500 6.0L LQ4 LQ9
2004-2006 Pontiac GTO Base LS1 LS2
2005-2013 Chevrolet Corvette Base LS2 LS3
2007-2013 Chevrolet Camaro SS LS3

Why Choose Cometic?

  • 30+ years manufacturing gaskets for OEM and racing applications
  • MLS technology trusted in NHRA Top Fuel and Pro Stock
  • Laser-cut precision and USA-made quality for consistent performance

Frequently Asked Questions

  • Q: Will this gasket fit stock bore LS engines?
    A: No it requires exactly 4.100in bore blocks common in sleeved or aftermarket LS builds LS1 LQ9 LS3 with oversized pistons
  • Q: What material is used in this gasket?
    A: Three-layer 301 stainless steel armature with Viton coating on sealing beads for high-temperature resilience and reusability
  • Q: Does Cometic offer a warranty on this head gasket?
    A: Limited warranty against defects in materials or workmanship when installed and used per instructions

Shipping & Handling

  • Method: UPS Ground USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Protective cardboard box 12.25in x 12.125in x 0.688in
  • Weight: 0.65 lbs

Request For Information

Have questions about Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.100in Bore - 1/2in Studs? Fill out the form below and we'll get back to you by the next business day.
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